The S-curve flow allows you to place more text into the segments.
It's also a little more interesting on the page. The two turns can be
as a result of an event, which you can describe in fields on the inside
of the flow S curves. There isn't a lot of space for peripheral text
with these frameworks – the emphasis should be on the flow itself and
not descriptions for the flow segments.

The S curve also suggests
a meandering, longer route rather than a straight, point-A-to-point-B
route. Use icons or photographs to visually communicate the flow steps
(as in the series example). The series example is also not necessarily
a flow from one segment to the next; but, rather, a full representation
of all the aspects of an education. Therefore, it is a nontraditional
flow: the educational process is a flow but the pieces of the
education happen in concert.